About Eye Associates of South Texas - Castroville We’re not only leading eye physicians in the South Texas Region, but we are also Ophthalmologists who care. Eye Associates of South Texas is a team of dedicated eye care professionals who have chosen to make protecting and improving the gift of sight, our life’s work. Eye Associates of South Texas is the collaborative practice of Dr. Sharron Acosta and Dr. J.T. Kavanagh, skilled, fellowship-trained specialists who have worked together for well over a decade. We’ve combined our talent and over 30 years of collective experience in order to provide the most comprehensive and effective options in the prevention and treatment of all eye diseases.